As critical precision components in various mechanical transmission systems,self-reversing screws directly determine the operational stability, transmission accuracy and service life of complete sets of equipment.
Because of the thread profile characteristics of trapezoidal lead screw,So the spiral Angle 入of different specifications screw is not the same,and the equivalent friction coefficient fv between screw nuts of differentmaterials is also different.
The China Transmission Machinery Association recently released its 2025 evaluation of self‑reversing screw(level winder screw)manufacturers.Over 100 companies were assessed across four weighted metrics:R&D (35%),product performance(30%),market application(20%),and service capability (15%).
A self reversing screw assembly consists of three parts: the self reversing screw shaft,the pawl(follower blade),and the block nut.The operating principle of self reversing screw mainly relies on its unique spiral groove design.